Front Fuel Pump Noise
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Mountain Pass
Joined: Mar 2022
Posts: 142
Likes: 64
From: Wyoming
Front Fuel Pump Noise
So I noticed yesterday that my front tank fuel pump makes a low whine while running. When I switched to the rear, the noise is gone. Fuel pressure holds steady at 31psi with vacuum and 41 without and same on both. A year and a half ago the dealer replaced the sending unit only and filler hose(kinked). I can't tell if it's a new noise or not. Never paid attention before as I was adding an adjustable regulator yesterday. Not sure if I should be worried or not.
1994 F250 7.5L
1994 F250 7.5L
Hotshot
Joined: Jul 2020
Posts: 10,453
Likes: 2,630
From: Near Salt Lake City
They get noisy as they start to wear out (way worse on the Chevs)
If you ever take an old one apart and inspect the commutator (brush to armature interface)
You will see extensive wear of the armature (causing the noise)
If you ever take an old one apart and inspect the commutator (brush to armature interface)
You will see extensive wear of the armature (causing the noise)
Thread Starter
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Mountain Pass
Joined: Mar 2022
Posts: 142
Likes: 64
From: Wyoming
That's what I am thinking. I am going to recheck today. Psi is the same on both just one is a little noisy.
Fleet Mechanic
Joined: Nov 2022
Posts: 1,697
Likes: 416
So I noticed yesterday that my front tank fuel pump makes a low whine while running. When I switched to the rear, the noise is gone. Fuel pressure holds steady at 31psi with vacuum and 41 without and same on both. A year and a half ago the dealer replaced the sending unit only and filler hose(kinked). I can't tell if it's a new noise or not. Never paid attention before as I was adding an adjustable regulator yesterday. Not sure if I should be worried or not.
1994 F250 7.5L
1994 F250 7.5L
Edit: will the bed have to be pulled to replace them? I don't even have a garage, so it'd be ideal if it didn't.
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Mountain Pass
Joined: Mar 2022
Posts: 142
Likes: 64
From: Wyoming
Not necessary to remove bed, but if doing both might be easier. I will go with the Delphi when it quits and may order it to have on hand. Thanks for the info.
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Hotshot
Joined: Jul 2020
Posts: 10,453
Likes: 2,630
From: Near Salt Lake City
I sure would not worry, just plan. The pump could last for years and years noisy like that
Keep some fuel in the tank to keep it cool
Keep some fuel in the tank to keep it cool
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Fleet Mechanic
Joined: Nov 2022
Posts: 1,697
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I know when my front tank is empty when the go pedal doesn't go anymore.
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